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Electronic Principles

Electronic Principles
Holes are the minority carriers in which type of semiconductor?

Intrinsic
n-type
Extrinsic
None of these
p-type

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Electronic Principles
The barrier potential accross each depletion layer is

20 V
0.8 V
None of these
0.7 V

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Electronic Principles
The value of a capacitor can be made larger by:

decreasing the area of the plates
increasing the area of the plates
increasing the frequency of the applied voltage
None of these
increasing the voltage applied to the plates

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Electronic Principles
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?

410 Ohm
550 Ohm
None of these
310 Ohm
400 Ohm

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Electronic Principles
In a step-down transformer, which is larger?

Secondary voltage
Impossible to say
None of these
Primary voltage
Neither

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Electronic Principles
At cut off, the Q point is at

None of these
lower end of the load line
middle of the load line
infinity
upper end of the load line

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